PART 6 DESIGN STANDARDS

Transcription

1 PART 6 DESIGN STANDARDS SECTION 601 GENERAL The standards and requirements contained in this Part shall apply as minimum design standards for subdivisions and/or land developments in Clay Township. In addition, subdivisions and/or and developments shall be designed to comply with the requirements of the Zoning Ordinance, the Storm Water Management Ordinance, Authority regulations, and PaDEP and Penn DOT regulations, as applicable. All proposed subdivisions and/or land developments shall be designed, laid out, arranged, constructed, maintained and coordinated with all presently existing facilities and improvements which serve the tract proposed to be developed, including but not limited to the (a) transportation network, (b) sewer collection, conveyance, and treatment facilities, (c) water supply and distribution facilities, and (d) storm water management facilities, as necessary to accommodate prospective traffic, provide adequate sewer and water service, promote proper storm water management, facilitate fire protection, prevent flooding, and conform to the Comprehensive Plan, including any adopted Urban Growth Boundary (UGB) or Village Growth Boundary (VGB), the Official Map, and any regulations or plans adopted in furtherance thereof. All proposed subdivisions and/or land developments shall also be designed, laid out, arranged, constructed, maintained and coordinated to insure that abutting properties will continue to have safe and convenient access in accordance with the standards of this Ordinance or, if such properties do not presently have such access, to have access at least equal to the level existing prior to the proposed subdivision and/or land development. The applicant shall submit studies and reports with the Preliminary Plan and the Final Plan, which shall clearly identify any assumed, proposed, and required improvements to existing facilities. If an applicant submits a study, report or plan which contains improvements assumed to be installed by others and compliance with the design standards in this Ordinance is based upon the completion of such assumed improvements, the design standards of this Ordinance shall not be considered met unless the applicant presents evidence that a governmental entity has budgeted funds and/or has entered into contracts for the assumed improvements or unless a plan for another development which proposes the installation of such improvements has been approved and recorded. A. Whenever the Zoning Ordinance provides that the use proposed by the applicant for subdivision and/or land development approval shall constitute a use by special exception or a conditional use, or when there is a need for a zoning variance, the applicant shall obtain such special exception, conditional use or variance approval from the Zoning Hearing Board or the Board of Supervisors, as applicable, prior to the submission of the Preliminary Plan. The Preliminary Plan shall be designed and developed in accordance with any conditions which 93

2 have been imposed upon the grant of such special exception or conditional use by the Zoning Hearing Board or the Board of Supervisors. B. Whenever the applicant proposes to develop a subdivision and/or land development in a manner that would require a variance or variances from any requirements of the Zoning Ordinance, the applicant shall obtain such variance or variances from the Zoning Hearing Board prior to the submission of the Preliminary Plan. The Preliminary Plan shall be designed and developed in accordance with any conditions that have been imposed upon the grant of such variance or variances by the Zoning Hearing Board. C. Whenever all or a portion of the land contained within an application for subdivision or land development approval constitutes all or a portion of land included in a prior subdivision or land development plan approved by the Township or the County Planning Commission and recorded in the Office of the Recorder of Deeds, the plan shall comply with all conditions, restrictions, and notes imposed on the prior approval and/or included upon the recorded subdivision or land development plan. The applicant shall identify all prior recorded subdivision and/or land development plans of which all or a portion of the land contained in the plan was a part and all conditions, easements and rights-of-way, restrictions, and notes which affect the current application. Failure to identify all applicable conditions, easements and rights-of-way, restrictions, and notes of record on prior plans constitutes a violation of this Ordinance. The applicant shall submit with the application for Preliminary Plan approval (or Final Plan approval if a Preliminary Plan is not required) a statement identifying the prior plans reviewed; the conditions, easements and rights-of-way, restrictions, and notes which would impact development in accordance with the plan for which approval has been requested; and an explanation of the manner in which the proposed plan has been designed to comply with such conditions, restrictions, and notes. This information shall be signed by the applicant or the applicant's engineer, landscape architect or other consultant. SECTION 602 STREETS, PRIVATE STREETS, ALLEYS, ACCESS DRIVES AND DRIVEWAYS A. General Standards. 1. The proposed street pattern shall be properly related to existing streets, to Official Maps, and to such Township and State road and highway plans as have been duly adopted. 2. All design elements of all streets, including horizontal and vertical alignment, sight distance, and super elevation, are subject to review and approval by the Township. When reviewing the design of streets, in addition to the standards in this Ordinance, the Rural Design Criteria in the Pennsylvania Department of Transportation Design Manual Part 2, 94

3 Highway Design, latest edition, and AASHTO, "A Policy on Geometric Design of Highways and Streets" (Green Book), latest edition, as amended, shall be consulted to assure that the road design is in accordance with acceptable engineering practice. 3. For certain aspects of vertical and horizontal alignment discussed below, standards are determined by design speed of the road involved. For all proposed streets, the subdivider shall indicate the proposed design speed, which speed is subject to approval by the Township. The design speed shall be a minimum of 35 MPH. Signs indicating the speed limit for streets, which limit shall not exceed the design speed, shall be posted by the developer on each street. B. Street Design. 1. The design standards for arterial streets shall follow Penn DOT specifications. 2. Collector streets shall have a minimum design speed of 35 mph. 3. Local streets, including cul-de-sac streets, shall have a minimum design speed of 30 mph. 4. The design speed of all streets shall be subject to Township approval. 5. The applicant shall indicate the design speed for all proposed streets. 6. The speed limit for all streets shall not exceed the design speed. The applicant shall post the speed limit for all streets upon completion of construction. C. Private Streets. Private Streets are prohibited unless they meet the design standards of these regulations. Applications which propose a private street shall be accompanied by an Agreement, which shall. be submitted with the Preliminary Plan Application and ultimately recorded with the Lancaster County Recorder of Deeds, as part of the Final Plan this Agreement shall establish the conditions under which the street(s) will be constructed and maintained, as well as conditions controlling an offer of dedication, and shall stipulate: 1. That the street shall be constructed and maintained to conform to the specifications of this Ordinance, unless waived by the Board of Supervisors. 2. That the owners of the abutting lots will include, with any future offer for dedication, sufficient monies, as established by the Township, to restore 95

4 the street to conformance with the prevailing standards, or will already have improved the streets to the prevailing standards. 3. That an offer for dedication of the street shall be made only for the street as a whole. 4. The method of accessing maintenance and repair costs. D. Major Collector Design. The design standards for major collectors shall be as specified by the Pennsylvania Department of Transportation and based upon the projected average daily traffic and speed limit. Projected average daily traffic shall be established by traffic surveys conducted by applicant (according to Penn DOT specifications), at applicant's sole expense. E. Arrangement. Streets shall be designed with consideration to both existing and planned streets. All streets shall be arranged to conform as closely as possible to the original topography. Streets which serve as connector routes to population centers shall be connected with streets of similar function, to form continuations thereof. Local streets shall be laid out to discourage use by through traffic. Streets shall be laid out to provide convenient and safe access to the property. The rigid rectangular street pattern need not be adhered to; the use of curvilinear streets and cul-de-sacs may be provided when there use will result in a more desirable layout. Where a development abuts an existing or proposed collector street, the Township Supervisors may require the use of marginal access streets, reverse frontage lots, or such other treatment that will provide protection for abutting properties, reduce the number of intersections with the collector street, and separate the local and through traffic. Single entrance roads to high intensity land uses shall be designed to handle the projected use. Where a subdivision or land development fronts on and will provide for vehicular access to and from an existing Township road which does not meet the minimum width requirements for Pavement, Shoulders, and Clearance Beyond Shoulder established in Table 3 of the latest edition of Guide Lines For Design Of Local Roads and Streets issued by the Pennsylvania Department of Transportation, the Township may require the Subdivider to improve at his expense the Township road to meet those width standards for Pavement, Shoulders, and Clearance Beyond Shoulder pavement shall be constructed in accordance with Pavement Design Guidelines for Rural Areas in Guidelines for Design of Local Roads and Streets. In addition, provision shall be made for adequate drainage along the sides of the roads. Such drainage provisions shall be approved by the Township. F. Street Provisions for Future Development. Areas shall be reserved for-future street usage in conjunction with the development of adjacent tracts. Areas reserved for future street usage will not be required to be improved; however, these areas shall include sufficient area to establish street and lot grading and 96

5 the extent of area necessary to construct the street. Areas reserved for future streets will be at least equal to the minimum right-of-way for the type of street proposed. The Township may require the extension of sanitary sewer and public water supply facilities within the area of the future street. The applicant shall submit an agreement in a form acceptable to the Township which shall provide for the construction and removal of the temporary turnaround. 1. Wherever there exists a dedicated or platted right-of-way reserved for future street usage along or abutting the boundary of a tract being developed, the adjacent street shall be extended into the proposed project provided that this extension is not adverse to the significant manmade or natural features of the site. 2. When reservations for future streets will adjoin lots to be developed prior to the construction of the streets, the subdivider shall determine the proposed grades of the future streets and the extent of the area necessary for the construction of those streets if the area necessary for the construction of the streets extends beyond the proposed street rightof-way lines, all excavation and grading necessary for the roads beyond the right-of-way lines shall be done as required improvements in conjunction with the subdivision which contained the adjoining lots or else construction easements shall be provided on the adjoining lots, sufficient to permit construction of the future street. 3. Where reservations for future streets intersection existing streets, radii shall be provided for the reservations such that the requirements of this Ordinance could be met for a street to be constructed in the future. 4. The developer connecting a proposed street to an existing temporary culde-sac shall perform all restoration work necessary to restore the adjacent lots in the area of the existing turnaround. G. Half Streets. Half or partial streets (less than the required right-of-way or cartway width) will not be permitted. All plans shall be designed to provide for the entire required right-of-way and cartway. H. Street Names. Continuations of existing streets shall be known by the same name. Names of new streets shall not duplicate or closely resemble names of existing streets within the Township or within the same postal, area. All new street names are subject to the local postmaster and local emergency service providers and Lancaster County Wide Communications granting approval with all Final Plan applications. All street names shall conform, where applicable, to the Township plan for street names. The developer shall install street name signs at all new street intersections. The design and placement of such signs shall be subject to Township approval and shall be in accordance with the current edition of Penn DOT Publications 236M (Handbook of Approved Signs) and 408M 97

6 (Specifications), as now existing or as hereinafter may be amended, supplemented or replaced. 1. Street and Road Signs. Name signs shall be installed at all new street and road intersections. The design and placement of such signs shall be subject to approval by the Township Supervisors. All signing shall identify both intersecting streets and roads. Regulatory signs shall be installed detail locations identified by a traffic circulation study prepared by the developer. Standard traffic signs shall be approved by the Township and shall, be supplied and installed in accordance with the current edition of Penn DOT Publications 236M (Handbook of Approved Signs) and 408M (Specifications), as now existing or as hereinafter may be amended, supplemented or replaced. Prior to acceptance of streets contouring signage, the developer shall provide an acceptable draft ordinance and any associated traffic studies justifying the sign installation and as easement agreement for maintenance of signs where required signage is located outside of the street right of way. I. Vertical alignments. Vertical street alignments shall be measured along the centerline. The minimum grade of all streets shall be seventy-five hundredths (0.75) percent and the maximum grade shall be ten (10) percent. 1. Vertical curves shall be used in changes in grade exceeding one (1) percent. The minimum lengths (in feet) of vertical curves shall be in accordance with the requirements of the AASHTO Green Book, as now existing or as hereinafter may be amended, supplemented or replaced. 2. Where the approaching grade exceeds seven (7) percent on any or all streets at a four-way street intersection, or the terminating street at a three-way intersection, a leveling area shall be provided on the street(s) which have a grade in excess of seven (7) percent which shall have a maximum grade of four (4) percent for a minimum length of seventy-five (75) feet measured from the intersection of the centerline. 3. The grade within the diameter of a turnaround at the terminus of a permanent cul-de-sac shall not exceed five (5) percent nor be less than one (1%) percent. 4. All new streets shall be graded to the right-of-way line. The maximum slopes of banks located outside of the street right-of-way, measured perpendicular to the right-of-way of the street, shall not exceed three to one (3:1) for fills and two to one (2:1) for cuts. 5. Streets shall be designed to preclude or minimize the need for guardrail. The Township may, however, require guard rail to be placed for protection on embankments when a barrier is indicated as warranted in Design 98

7 Manual Part 2 Highway Design by the Pennsylvania Department of Transportation, latest edition, as amended. The design and selection of guide rail shall be in accordance with the standards In Design Manual Part 2 Highway Design, latest edition, as amended. J. Horizontal Alignments. Horizontal street alignments shall be measured along the centerline, Horizontal curves shall, be used at all angle changes in excess of two (2) degrees. Single, long radius curves shall be used rather than a series of curves, with varying radii and/or a series of short curves separated by short, straight segments. The minimum horizontal curve radius for streets shall be the greater of the design requirements of Design Manual Part II Highway Division Design and/or the AASHTO Green Book or the following: Table 1 Design Speed (in miles per hour) Minimum Center Line Radius (In feet) Perimeter Streets. Plans with street locations along the perimeter of a property shall be required to show building setback lines and clear sight triangles within the adjacent properties; permission for any encroachment shall be obtained from the adjacent Landowner in the form of a signed agreement. 2. Cartway Alignment. The centerline of the street cartway shall correspond with the centerline of the street right-of-way. K. Street Right-Of-Way and Cartway Widths. The minimum street right-of-way and cartway widths for existing streets adjacent to new development and new streets shall be as follows: 99

8 Table 2 Classification Right-Of-Way Cartway Principal and Minor Arterial Major Collector Minor Collector Design standards shall be specified by the Pennsylvania Department of Transportation and based upon the projected daily traffic and speed limit. 60 Feet 38 Feet 60 Feet 38 Feet Local Street 60 Feet 38 Feet Shoulders. Shoulders shall be provided in accordance with the design specifications (See Appendices). 1. Extension of Existing Streets. The extension of existing streets which are presently constructed with a cartway different from the standards of this Ordinance shall be provided with a transition area, the design of which is subject to approval by the Township Supervisors. 2. Dedication of Additional Right-Of-Way. If a subdivision or land development abuts an existing Township and/or State street which has a right-of-way width of less than the required right-of-way for new streets set forth in Section 602 I., the developer shall offer to dedicate to the Township or Commonwealth, as applicable, the amount of land necessary so that the distance from the centerline of the street to the edge of the right-of-way abutting the proposed development is one-half the ultimate right-of-way width set forth in Section 602 I. 3. Improvement of Existing Streets and Intersections. Where a subdivision or land development abuts an existing Township and/or State street or shall have a traffic impact on an existing Township and/or State street as indicated by a traffic study the developer shall be required to make the following improvements: a. In cases where a subdivision or land development abuts an existing Township or State street, the street shall be improved to the ultimate width in accordance with the new street standards of Section 602 I. b. In cases where the development is situated only on one side of an existing street, the Township may require that only that side of the 100

9 street be improved. The Township may require that both sides of the street be improved where the traffic impact study indicates that the improvements are necessary. c. Where the developer of the subdivision of land development is required to provide a traffic study and report, and the traffic study and report indicates that improvements are required, the developer shall install improvements, including but not limited to traffic signals, traffic control devices, additional traffic lanes, traffic dividers and highway markings. d. Where the traffic impact study indicates that improvements are necessary or advisable to existing Township and/or state streets and/or intersections within the traffic impact study area in order to (i) assure adequate, safe and convenient access to each lot and/or structure and/or parking compound proposed as part of the development of the tract, (ii) accommodate the traffic due to the proposed development, (iii) provide for a level of service and delay for the design year, or years for phase projects, with the development which is at least equivalent to the projected level of service and delay for the design year(s) without the proposed subdivision or development, and/or (iv) preserve the existing convenience of access to or ability to exit from abutting properties which gain access from the existing street, the developer shall, to the extent permitted by law, install additional traffic lanes, traffic dividers, traffic improvements. The developer shall install additional traffic lanes, traffic dividers, traffic control devices, traffic signals, and other measures as appropriate to ensure that the development of the tract does not adversely impact the existing street system and/or access to or the ability to exit from properties gaining access from an affected street. If the traffic impact study indicates that improvements must be made to a state street, the developer shall also take all action necessary to obtain any Penn DOT permits and/or approvals to install the necessary street widening and/or traffic signals and/or traffic signals and/or traffic signal modifications (including but not limited to preparation of all studies and submission of all necessary applications to enable the installation of the traffic signal or modifications) and shall install the traffic signal or modifications at its cost and expense. If the traffic impact study indicates that traffic control devices or regulations including, but not limited to, stop intersections, speed limit reductions, or parking prohibitions, are required, the developer shall prepare all studies necessary to justify imposition of such regulations in accordance with Penn DOT regulations and shall pay all costs associated with the preparation and enactment of an ordinance to establish such regulations. The developer shall bear 101

10 all costs and expenses in connection with the improvements required by this Section 602 K.3. If the developer requires the Township to submit any permit applications or requests for approvals in the name of the Township, the developer shall reimburse the Township for all costs and expenses incurred by the Township in connection with its review of the application and submission of the application to Penn DOT or any other governmental agency. e. When the Township determines that the required improvements are not feasible at the time of development of the use, the developer shall deposit funds with the Township in the amount of one hundred and ten (110%) percent of the cost of the improvements (including any design, permitting, or legal costs) computed in accordance with Part 5 of this Ordinance. The amount of the deposit shall be submitted for approval by the Township Engineer. L. Street Improvements. All streets shall be designed and constructed in accordance with the latest edition of Penn DOT Publication 408 (Specifications), the construction details located in the Appendices and the following: 1. Subgrade. Roadway subgrade shall be graded to provide a minimum two (2%) percent cross-slope from centerline as indicated in the construction details in the Appendices. In all cases subgrade material shall be firm and dry prior to the installation of the proposed subbase material. In the instance of unsuitable subgrade conditions, the developer may excavate unsuitable material and replace with suitable crushed aggregate, install under drains, or utilize geotextile material in order to provide sound pavement structure in accordance with Penn DOT guidelines and as approved by the Township. 2. Required Paving Section. All roads to be constructed shall meet the following paving requirements: a. Streets intended to serve as rural local roads and in residential developments shall be constructed as follows: (1) Subbase Course Six (6) inches of 2A subbase. (2) Base Course Five (5) inches of Bituminous Concrete Base Course or Superpave equivalent. (3) Binder Course Two and one-half (2-1/2) inches of Bituminous Concrete ID-2 Binder material or Superpave equivalent. 102

11 (4) Wearing Course One and one-half (1-1/2) inches of Bituminous Concrete ID-2 Wearing material or Superpave equivalent. b. Streets intended to serve as collector or arterial roads or as part of industrial or commercial developments shall be constructed as follows: (1) Subbase Course Six (6) inches of 2A subbase. (2) Base Course Six (6) inches of Bituminous Concrete Base Course or Superpave equivalent. (3) Binder Course Three (3) inches of Bituminous Concrete ID-2 Binder material or Superpave equivalent. (4) Wearing Course One and one-half (1-1/2) inches of Bituminous Concrete ID-2 Wearing material or Superpave equivalent. c. Except where curbs are to be installed, the subbase for all proposed roads shall extend one (1) foot beyond the edge of the paved cartway. d. The maximum lifts for the installation of bituminous material shall be four (4) inches for base courses, three (3) inches for binder courses and two (2) inches for wearing courses. e. All vertical pavement joints shall be staggered by a minimum distance of one foot. f. Tack coat shall be applied as needed. 3. Construction Observation. The developer shall notify the Township fortyeight (48) hours in advance of the date of intended installation of each roadway course so that the preceding course can be inspected, and proof-rolled, as necessary. 4. Trench Restoration. Excavation within, or adjacent to streets shall be restored in accordance with the construction details located in the Appendices and the following: a. Trench restoration shall proceed as promptly as is possible. Trenches which must remain open for longer periods of time shall be properly plated and delineated for oncoming traffic. 103

12 b. The remainder of the trench shall be backfilled with 2-RC or 2A and promptly compacted. The backfill material shall be mechanically tamped in approximately six (6) inches layers. c. Where openings are made behind the curb line, work shall be performed as required in these specifications, and the opening covered with good topsoil to a depth of six (6) inches, and seeded or sodded to the Township s satisfaction. d. Whenever the trenches have not been properly filled, or if settlement occurs, they shall be refilled, compacted, smoothed off, and finally made to conform to the surface of the ground. e. Frozen material shall not be used for backfill, nor shall any backfilling be done when materials already in the trench are frozen. 5. Weather Limitation. Criteria for placement of bituminous materials during cold or inclement weather shall be in accordance with the latest edition of Penn DOT Publication 408 (Specification). 6. Accessibility. Street construction shall be complete with the installation of the required binder course for streets to be considered accessible to occupied lots. M. Street Intersections. 1. Multiple intersections involving the junction of more than two streets are prohibited. 2. The distance between the centerline of streets opening onto the opposite sides of existing or proposed streets shall be no less than 150 feet between centerlines, measured along the centerline of the local street being intersected. 3. Intersections with collector streets shall be located not closer than four hundred (400) feet, measured from centerline to centerline, along the centerline of the collector street being intersected. 4. Intersections with arterial streets shall be located not closer than one thousand (1,000) feet, measured from center line, along the center line of the arterial being intersected. 5. Right angle intersections shall be used whenever possible. No street shall intersect another at an angle of less than seventy-five (75) degrees. 104

13 6. The cartway edge street intersections shall be rounded by a tangential arc with a minimum radius of twenty-five (25) feet for local streets or alleys and fifty-five (55) feet for intersections involving collector or arterial streets. The right-of-way radii at intersections shall be substantially concentric with the edge of the cartway. N. Sight Distance and Stopping Sight Distance at Street Intersections. 1. Clear Sight Triangles. There shall be provided and maintained at all street intersections a clear sight triangle of at least one hundred (100) feet as measured from the intersection of the street centerlines in all directions. Clear sight triangles shall be indicated on all plans, and a note shall be provided on the plans which states that no structures, landscaping or grading may be constructed, installed or performed within the area of the clear sight triangle which would obscure the vision of motorists. Deeds to lots which contain clear sight triangles shall include the requirement of this Section. 2. Safe Stopping Sight Distance (SSSD): a. Street intersections shall be located at a point which provides optimal sight distance in both directions. b. Calculation of Safe Stopping Sight Distance (SSSD). (1) For each intersection, the available sight distance for each direction shall equal or exceed the SSSD computed from the following formula: SSSD = 1.47Vt + {V 2 / [30 x(f+g)]} WHERE: SSSD = Safe stopping sight distance (feet). V = Speed limit, or 85th percentile speed or safe operating speed. t = Perception time of driver (2.5 seconds). f = Wet friction of pavement as follows: Speed f 25 mph mph mph mph mph mph mpg 0.30 G = Percent grade of roadway divided by

14 Speed (V) (Miles Per Hour) (2) If the 85th percentile speed varies by more than ten (10) miles per hour from the speed limit, the Township may require the 85th percentile speed to be used to determine stopping distance. (3) Table 3 depicts stopping sight distance for selected speeds. The sight distances in Table 3 apply for roadway grades in whole numbers from +13% to -13% along with speeds from 15 to 60 miles per hour in increments of 5 miles per hour. The designer may use this table in lieu of the above formula Table 3 FORMULA SIGHT DISTANCE TABLE Average Grade (G) (Percent) c. Measurement of Sight Distance. (1) The correct measurement of available sight distance at each proposed street intersection shall be the responsibility of the applicant. (2) For the purpose of measuring available sight distance, the height of each driver's eyes shall be 3.50 feet above the road surface, and the height of each vehicle shall be 4.25 feet above the road surface. The lateral placement of vehicles on the roadway and at the proposed access point 106

15 shall be consistent with the operation of the access and roadway. (3) For each direction, the shortest of the following measurements shall be considered the available sight distance for that direction: (a) (b) (c) The maximum length of roadway along which a driver at the proposed street intersection can continuously see another vehicle approaching on the roadway. The driver's eyes at the proposed point of access shall be ten (10) feet back from the near edge of the closest travel lane. The maximum length of roadway along which a driver on the roadway can continuously see a vehicle which is located in his travel lane on the roadway in order to make a left turn into the proposed access or as a result of a left or right turn out of the proposed access. The maximum length of roadway along which the driver of a vehicle intending to make a left turn into the proposed access can continuously see vehicles approaching from the other direction. This is measured from the point where the left turning vehicle stops. d. Inadequate sight distance remedies. If it is impossible to achieve required stopping sight distance, in both directions the Township may: (1) Prohibit left turns by entering or exiting vehicles. (2) Require alteration of the horizontal or vertical geometry of the roadway or access; all such work shall be at the expense of the applicant. (3) Require removal of physical obstruction from the line of sight, at the expense of the applicant. (4) Deny access to the roadway. 3. Proper sight distance shall be provided with respect to both horizontal and vertical road alignments at all intersections. 107

16 4. All streets intersecting a State Route shall be subject to the approval of the Pennsylvania Department of Transportation. O. Cul-De-Sac Streets. A cul-de-sac will not be approved when a through street is more advantageous. Permanent cul-de-sac streets shall have a minimum length of three hundred (300) feet and shall not exceed a centerline distance of six hundred (600) feet in length, measured from the centerline intersection with a street which is not a cul-de-sac to the center of the cul-de-sac turnaround. Temporary cul-de-sac streets shall have a minimum length of three hundred (300) feet and shall not exceed eight hundred (800) feet in length, measured from the centerline intersection with a street which is not a cul-de-sac to the center of the cul-de-sac turnaround. Any street which is terminated for access to an adjoining property or because of authorized stage development shall be provided with a temporary, all weather turnaround. The use of such turnaround shall be guaranteed until such time as the street is extended. All cul-de-sac streets, whether permanently or temporarily designed, shall be provided at the closed end with a fully-paved, closed-end, turnaround at a minimum width/diameter of one hundred (100) feet and a right-of-way width/diameter of one hundred twenty (120) feet. The use of a temporary turnaround shall be guaranteed until the street is extended. A right side centerline off-set for the turnaround is desired. A left side centerline off-set of the turnaround is prohibited. All permanent cul-de-sacs shall be designed with a snow removal easement at the terminus. The easement shall extend outward from the street right-of-way and be twenty-eight (28) feet wide and twenty (20) feet deep from the street curb line. The easement shall be centered on the projected center line of the street. The Final Plan shall contain a note stating that the easement shall be maintained as open space and no improvements or obstructions such as driveways, mailboxes, fences, hydrants, landscaping and other facilities that may hamper snow storage, or may require accessibility during snow periods shall be permitted. The developer who extends a street which has been provided with a temporary turnaround shall be required to remove the temporary turnaround and restore the area of the temporary turnaround. P. Future Rights-of-Way. Future rights-of-way are rights-of-way reserved for future street improvements. They shall be designed in conformance with the design requirements of a street, and the contiguous parcels must contain proper setbacks and sight distances. 1. The area within the future right-of-way shall be included within the deeds to the abutting lots with an easement in favor of the Township and landowners of the land into which the future right-of-way will extend to 108

17 permit the use of the future right-of-way for public street purposes should the adjoining lands be developed. 2. The landowners of the lots in which the future right-of-way is included shall have the duty to maintain the area included within the future right-ofway and this duty shall be indicated in a note on the Final Plan and in all deeds to such lots. 3. The landowners of the lots in which the future right-of-way is included shall have no obligation concerning the improvement of such future rightof-way for street purposes. Q. Special Purpose Street. Off-street parking must be provided which abut a special purpose street, and the prohibition of on-street parking must be identified along the cartway. R. Service Streets. Service streets are permitted only where required to provide direct driveway access to collector streets. Additional use of service streets may be permitted via the waiver process, provided that the applicant produces evidence satisfactory for the need, and provided these are not the primary means of access. 1. Where permitted, service streets shall have a minimum paved width of twenty (20) feet, however, where service streets serve parcels on only one side and will be one way, the Township Supervisors may permit a paved surface of not less than twelve (12) feet. 2. Dead end service streets should be avoided, but where this proves impossible, dead end service streets shall be terminated with a paved, circular turnaround with a minimum radius to the outer pavement edge of forty (40) feet. 3. Service street intersections shall be designed in accordance with Section 602 J. and 602 K. of this Ordinance. S. Alleys. The use of alleys is limited to providing a primary means of access to the side and/or rear of those lots with street frontage and designed to discharge through traffic. Alleys shall conform to the following standards: 1. A lot which utilizes an alley shall maintain frontage along a public or private street. 2. An application that proposes alleys shall be accompanied by an agreement which shall be recorded with the Final Plan and which shall establish the conditions under which the alleys will be maintained. 109

18 3. The Final Plan for recordation with the Recorder of Deeds shall include a plan note which identifies (1) the specific alleys, (2) the recorded maintenance agreement, and (3) a notification that the alleys do not qualify for dedication to the Township and that the Township will not assume any responsibility for their maintenance. 4. The cartway of all alleys shall be provided and constructed in accordance with the specifications for local streets as stated in Sections 602 K. and 602 L. 5. The vertical and horizontal alignments of alleys shall conform to the specifications for local streets as stated in Section 602 I. and 602. respectively. 6. Alley intersections shall conform to the specifications for local streets in Section 602 N. 7. No part of any structure shall be located within thirty (30) feet from the cartway edge of an alley. 8. Alleys which form a cul-de-sac shall not exceed four hundred (400) feet in length, measured form the centerline intersection of a street or private street which is not a cul-de-sac. Alley cul-de-sacs which do not terminate in a parking compound shall be provided at the terminus with a fully paved turnaround. The turnaround shall be designed with an eighty (80) foot paved diameter. 9. Alley Maintenance. The Final Plan shall contain a note which states that the alley shall not be offered for dedicated and shall be privately maintained. a. If an alley is to be for the common use of two or more properties, the applicant shall provide for the maintenance of such alley. The applicant shall provide for private maintenance through the formation of the homeowner s association or through the setting forth of the maintenance responsibilities in easement in the deeds to the lots which have the right to use the alley. If a homeowners association is formed, a document setting forth the maintenance responsibilities of such association and the right of such association to assess lots within the development shall be recorded at the same time as the Final Plan is recorded. All such documents shall be in a form acceptable to the Township Solicitor. b. All persons who shall purchase a lot abutting or having the right to use an alley shall be given a copy of the Final Plan, and, if a homeowners association has been formed, shall be given a copy 110

19 T. Access Drives. of all such documents relating to the maintenance responsibilities of such homeowners association. 1. Access drives, as defined in Section 203, shall have the following characteristics: a. A property which utilizes access drives shall maintain frontage along a public or private street. b. An application that proposes access drives shall be accompanied by an agreement which shall be recorded with the Final Plan and which shall establish the conditions under which the access drives will be maintained. c. The Final Plan, for recordation with the Lancaster County Recorder of Deeds, shall include a plan note which identifies: (1) the specific access drives, (2) the recorded maintenance agreement; and, (3) a notification that the access drives do not qualify for dedication to the Township and that the Township will not assume any responsibility for their maintenance. 2. The cartway of all access drives shall be constructed in accordance with the specification for local streets as stated in Section 602 I Access drives do not require a specific right-of-way; however, the following standards for cartway width shall apply; Table 4 Function Two lanes of traffic with on-street parking Two lanes of traffic with-out on-street parking* One lane of traffic with one lane of on-street parking* One lane of traffic with-out on-street parking* Cartway Width 36 Feet 24 Feet 20 Feet 12 Feet * Off-street parking compounds must be provided in accordance with Section 603 of this Ordinance and the prohibition of on-street parking must be identified along the cartway. ** The one-way direction of traffic must be identified along the cartway. 111

20 4. No part of any structure shall be located closer to the cartway edge of an access drive than allowed by the regulations set forth in the Zoning Ordinance of Clay Township. 5. The vertical and horizontal alignment of access drives shall conform to the specifications for local streets assisted in Sections 602 G. and 602 H., respectively. 6. Access drive intersections shall conform to the specifications for local streets as stated in Section 602 K. 7. Access drives which form a cul-de-sac shall not exceed one thousand, six hundred (1,600) feet in length, measured from the centerline intersection of a street or access drive which is not a cul-de-sac. Access drive cul-desacs which don't terminate in a parking compound shall be provided at the terminus with a fully paved turnaround. The turnaround shall be designed in accordance with one of the following methods: a. A minimum eighty (80) foot paved diameter. Increased diameter may be required based on the proposed use(s). b. T-shaped turnaround with a twelve (12) foot width and the flared portions rounded by minimum radii of twenty (20) feet. 8. All access drives, residential access drives, parking areas, and parking compounds shall be paved. The following standards shall be used as a minimum: six inches (6") of 2A subbase, three inches (3") of ID- 2 binder course or Superpave equivalent and one and one-half inches (1-1/2") of ID- 2 wearing course or Superpave equivalent. U. Driveways. Driveways, as defined in Section 203, shall conform with the following requirements. 1. Driveways shall be located as to provide minimum safe stopping distance at intersections in accordance with the standards of Section 602 K.2. and shall not be located within any clear site triangles on abutting streets or access drives. 2. Driveways shall be located at least forty (40') feet from the cartway edge at street or access drive intersections. Access shall be provided and maintained to the street or access drive of lesser classification or lesser traffic volumes. They shall not interfere with the normal driveway traffic movement or be inconsistent with the design, maintenance, and drainage of the street or access drive. 112

21 3. Driveways shall be located a minimum of three (3) feet from any property line, except where a common driveway crosses a property line. The number of access points to as street or access drive shall be one (1). 4. Driveways shall maintain a minimum width of ten (10') feet over the entire length and have a maximum width of thirty (30') feet within the street rightof-way or the intersection with an access drive. 5. Common driveways may be used when extraordinary topographic or other physical circumstances exist and if approved by the Township. Common driveways are prohibited for access to or use by more than two (2) lots or units of occupancy. When common driveways are permitted, an access and maintenance agreement shall be provided for each lot and recorded. The agreement shall be in a format reasonably acceptable to the Township Solicitor and consistent with any agreement that has previously been adopted by the Board of Supervisors, pursuant to the provisions hereof, but at a minimum should address maintenance, access and repair, and shall be prepared and recorded consistent with the provisions of Sections 508.F.2 and 606 hereof. 6. Driveways shall contain paved entrances a minimum of twenty five (25) feet from the street or access drive. All paved entrances must be constructed to provide proper drainage and continuation of the existing shoulder configuration. The following paving standards shall be used as a minimum: four (4") inches of 2A subbase and two (2") inches of ID-2, known as bituminous paving, or approved equivalent. 7. Driveways shall have a maximum slope of eight (8%) percent for a distance of twenty-five (25') feet from the street or access drive Where a driveway or common driveway exceeds, or is expected to exceed a slope of twelve (12%) percent, special grading and/or drainage provisions may be required by the Township. 8. When a proposed driveway will access a street or access drive which, in the opinion of the Township, has large traffic volumes, higher traffic speeds, or poor site distances the Township may require the use of a turn-around are to prevent vehicles from backing onto the street or access drive The design of the turnaround is subject to Township approval. 9. Subdivisions and Land Developments shall be provided with internal streets to which lots will have driveway access in order to minimize the number of driveway intersections with existing public streets. This reduction in driveway intersections will lesson interruptions with the traffic flow and accident hazards and minimize sedimentation and run off problems on to existing public streets. 113

22 V. Specific Traffic Control and Access Requirements. The following specific traffic control and access requirements shall be met for developments which produce 100 peak hour directional trips. 1. If any traffic signals are to be installed, the distance between any new and/or existing signals shall be at least one thousand (1,000) feet unless the developer demonstrates that adjacent traffic signals can operate sufficiently at lesser distances. 2. Design of proposed development access points shall take into consideration the horizontal and vertical grades of the existing road network in the traffic impact study area to permit safe and convenient access to the site as defined in the latest Penn DOT and regulations. All modifications required to meet these regulations will be the responsibility of the developer. 3. The developer shall demonstrate by using the latest Penn DOT standards and regulations that the proposed use will not create traffic patterns and movements which will jeopardize the traveling public. a. Stacking of sufficient length shall be provide in all traffic lanes on the site and off the site on adjacent roadways to insure that there shall be no blockage of through traffic. The design and length of the stacking lanes shall be justified and supported by the queuing analysis required as part of the traffic impact study. b. Street and/or access drives to and within the site shall be designed in a manner that blockage of through traffic by vehicles attempting to enter or exit on these streets or access drives will not occur. c. Acceleration, deceleration and turning lanes shall be of sufficient lengths to accomplish their intended use. 4. If reduction of the speed limit, installation of traffic control devices, limitation of parking or turning movements or similar measures are required to mitigate traffic impacts upon Township or state highways, the applicant shall present traffic studies performed in accordance with Penn DOT regulations and Publication No. 201, Engineering and Traffic Study regulations and Penn DOT s Policies and Procedures for Transportation Impact Studies Related to Highway Occupancy Permits. The erection or the installation of such traffic control devices shall be in accordance with Title 67, Chapter 211, Official Traffic Control Devices, of Penn DOT regulations. If the enactment of an ordinance is necessary to effectuate the traffic regulations or the installation of the traffic control device, the applicant shall reimburse the Township for all expenses in the preparation and enactment of the necessary ordinance. 114